Castro Valley Weather in January
Castro Valley in January sees moderate temperatures, with highs around 15°C (59°F) and overnight lows of 5°C (41°F). Rainfall is fairly high at around 75 mm (3 in) on average, so pack waterproofs just in case.
Rainfall in Castro Valley in January
You can expect rain on around 11 days based on historical patterns, with 75 mm (3 in) average for the month. Rainfall intensity is on the higher side this month. Expect more substantial showers rather than light, passing rain.
Temperature in Castro Valley in January
In January, Castro Valley sees moderate temperatures, with highs of 15°C (59°F). Nights drop to around 5°C (41°F). During January, the winter season is in full swing. This creates a mild day-to-night pattern that is generally easy to manage with the right clothing. Nights drop to 5°C (41°F). Cold nights like these are actually great for sleeping well, as long as you have a warm enough duvet.
Sunshine in Castro Valley in January
The month experiences a moderate amount of sunlight, with 186 hours of sunshine. This provides a nice balance between sunshine and clouds.Our weather planner can help you find worldwide destinations with pleasant weather during this period. May, June, July, August, September and October typically offer the best weather for Castro Valley.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit the United States of America, check out our Castro Valley's climate page.
Castro Valley Temperature in January
Min Temperature
5°C (41°F)
Max Temperature
15°C (59°F)
Chance of Rain
35%
Precipitation
75 mm (3 in)
Rainy days
11 days
Humidity
80% *
Sunshine
186 hours *
Percentage Sunshine
61% *
Best Places in the United States of America in January
Find out more about the weather in the United States of America and which places have the best travel conditions in this month. See all of the United States of America in January →
perfect weather
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unpleasant
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What to Wear in Castro Valley in January
The weather can be unpredictable in January, so pack clothes you can easily mix and match. You could bring jeans, other long pants, and a few t-shirts. A light jacket or light sweater will be pleasant for the cooler moments. Rain is likely on several days, so bring a good rain jacket. Sunglasses could come in handy during the sunnier parts of your trip.What To Do in Castro Valley in January
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit the United States of America, check out our Castro Valley's climate page.
Temperature Rainfall Sunshine Humidity
See the full Castro Valley climate overview or explore weather in the United States of America.
